Use the Show Control Hierarchy Dialog command from the Window menu to access the Hierarchy for Form dialog that enables you to display a hierarchical list of all controls painted on the currently active form.
A list box displays a hierarchical list of parent‑child relationships of each control painted on the form. Each control is listed alphabetically by control name under its control parent entry. Each entry is displayed as control-name (control‑class‑name) 'caption'; for example:
btnEdit (Button) 'Edit'
To access the Hierarchy for Form dialog
Select Show Control Hierarchy Dialog from the Window menu.
For details, see "Displaying a Hierarchical List of Controls on a Form", earlier in this chapter.